When I was in my late teens, I had a few experiences where I saw and felt a presence that was ghost-like. I am not going to go into details. They happened in the same location. They were frightening. I had a terrible feeling associated with this experience.
Many years later, my children and I also had similar experiences, but always in the same environment. Once we moved, these experiences went away.
I placed these experiences in the realm of being spiritual in nature, as this was my background. I was told that I was being visited by evil spirits because I needed to repent. I didn't necessarily believe this explanation because I couldn't think of a sin large enough to associate with this experience. I was also told that satan wanted to have my soul and was trying to gain access to me. This was a horrifying explanation to me.
As I left a dogmatic/black and white religion behind, this was the last vestige of the religion I could not put behind me, as I did not have a logical, reasonable explanation for. I searched for one, but could not find one. I finally put my mind at ease with the thought that someday science would find an explanation but had not as of yet.
I believe science has found that explantion: The link I had is unavailable. This link is just as good: